Why are camera companies' naming conventions so retarded?

>Sony
Mixes A, α, R, S, roman numerals, and arabic numerals with no apparent logic, the α1 is better than the α7 but the A6500 is better than the A6000

>Fuji
XF, X100S/F/V, X-H, X-T, X-S, X-Pro, X-E, X-A, GFX, s, 30 is worse than 3

>Canon
APSC and FF in the same fucking series, can never tell whether the higher or lower number is supposed to be better

>Nikon
Fairly consistent and logical, but why does Z start at 5 and skip 8?

>Panasonic
Series are called S and G, but cameras get cryptic names like DC-S5M2X and DC-GH5M2M

>Olympus
Oh boy

>Leica
This is how you do it